baber/WOPTO huggingface dataset:
Patent GB-1461175-A (GB)
Title: Apparatus for removing a tyre from a wheel
IPC: B60C25/02
Filed: 1974-04-02
Abstract: 1461175 Removing tyres from wheels COLLMANN GmbH & CO SPEZIALMASCHINENBAUKG 2 April 1974 14606/74 Heading B7C Apparatus for removing a tyre 29 from a wheel rim having a detachable bead retaining flange (not shown) comprises a wheel support 15 axially movable on a pillar 1 when compressed air is supplied to bellows 18 to displace wheel 30 upwardly while the tyre is engaged by pusher arms 8, 9 pivotally connected to a cross-beam 6 mounted on the pillar at pivot 7. Preferably, as illustrated, the pillar comprises an upper section 1b rotatable relative to a lower section 1a by means of a U-shaped clip 28 engaging opposed portions of an annular groove 1d in the upper section. In use, the upper section with the beam and elements 8, 9 is initially removed, to permit a wheel to be placed on the support 15 with the detachable flange uppermost, and is then replaced. The upper side wall of the tyre is depressed, to permit detaching of the flange, by the introduction of compressed air into space 24. The pressure in space 24 is released and the upper section is again removed, and the wheel is turned over (to the illustrated condition). After replacing the upper section air is again supplied to space 24 to push the tyre off the rim. The bellows is preferably made of rubber material reinforced with fabric inserts, and a strengthening ring 23 extends therearound. Supply of air to, and exhaust from, the space 24 is controlled by hand or foot operated valve 27. The upper end 5 of the upper section 1b is bifurcated, and the ends of the beam may also be bifurcated.
Patent GB-199238-A (GB)
Title: Improvements in the construction of electric condensers of continuously variable capacity
Filed: 1922-05-24
Abstract: 199,238. Huskinson, A. C. May 24,1922. Condensers. - In a variable condenser of the kind having a fixed and a movable set of plates separated by a solid dielectric, the plates of one or both sets are loosely mounted so that they can adjust themselves to variations in distance between successive plates. In the form shown, the movable plate 6, separated by metal washers 8 carrying the dielectric discs 7, are clamped on a rotatable spindle 3, and the fixed plates 4 are loosely mounted on posts 5. The plates 4 may be electrically connected to each other and to one of the posts 5 by means of a bolt 13 passing through holes 12 in the corners of the plates and through distance-pieces 14, which may be in the form of spring washers. Alternatively, the fixed plates may be provided with projecting lugs which may be bent down and clamped together, or fiexible connections may 'be soldered to each plate. The dielectric may be in the form of a coating applied to the plates of one or both sets.
Patent GB-163996-A (GB)
Title: Improvements in piston engines
IPC: F16H23/04
Filed: 1921-05-27
Abstract: 163,996. Olivier, H. C. May 27, 1921. Swash-plate mechanism; engines with main shaft parallel to axis of cylinder.-In an engine or pump with wobbler driving-mechanism, the wobbler is made in two parts g with radiating- arms, and is mounted on conical shoulders f on a sleeve e mounted on an inclined crank c of the shaft a. The sleeve e is provided with trunnions k upon which is mounted a two-part gimbal piece l provided with trunnions m supported in a stationary two-part ring m mounted on the engine frame.
Patent GB-707946-A (GB)
Title: Improvements in and relating to asbestos felt moulding material
IPC: C04B26/12
Filed: 1952-06-12
Abstract: 707,946. Asbestos sheets &c., for moulding. CAPE ASBESTOS CO., Ltd., and GAZE, R. June 12, 1952, No. 14859/52. Class 96 Asbestos felt material &c., suitable for relatively low pressure moulding, is made from a suspension of Amosite and/or Chrysotile fibre and resin, e.g. a water-insoluble, onestage phenol- or cresol-aldehyde ground to pass 100-mesh B.S. optionally with a little starch or a gum and a filler, e.g. china clay, barytes, whiting. The suspension is beaten, diluted, and formed, e.g. on a millboard machine and may be pressed at 150 lbs. per sq. in., and dried, optionally after cutting into sheets, e.g. for 8 hours at 100‹ F. The sheets may be dipped in methylated spirit, drained, dried, and cured, or may be sprayed with a solution of a synthetic resin or with a solvent for the resin used in the wet mix. Sheets so made may be 1/32 to 1/4 in. thick.
Patent GB-706505-A (GB)
Title: Improvements in or relating to rotary liquid atomisers
IPC: B01D1/20
Filed: 1951-06-22
Abstract: 706,505. Spray-producers. AKTIESELSKABET NIRO ATOMISER. June 22, 1951 [June 26, 1950], No. 14880/51. Class 69 (3) A rapidly rotating vane wheel 12 with vanes or channels 14 from which the liquid is flung is supplied with liquid through one or more pipes 11, and the liquid passes to a ring- shaped body 5 rotating coaxially with the wheel 12 and having an internal conical surface provided with sawtooth-like recesses 7. No space is left between the body 5 and the wheel, and the liquid flows outwardly from the oblique edges 8 of the sawteeth, Fig. 1. That part of the body not interrupted by the teeth may include projections &c. for improving liquid flow. The vanes or channels 14 may extend radially or obliquely, or may be curved forwards or backwards in the direction of motion. The body may be arranged with the teeth pointing downwardly, in which case the liquid is fed to it from a bowl-shaped distributor from which the liquid is flung.
Patent GB-399126-A (GB)
Title: Improvements in or relating to sintered magnesia and refractory materials containing sintered magnesia
IPC: C04B35/043
Filed: 1932-04-23
Abstract: Refractory sintered magnesia is produced from materials low in iron by adding to the change black or blackish-brown highly ferromagnetic magnesium ferrite, MgO.Fe2O3, of an artificial or natural origin. The magnesite may be in a coarsely crushed form and the magnesium ferrite finely crushed.  Magnesium ferrite may also be added to previously sintered magnesium to improve its refractory properties. In an example, 4 per cent of a magnesium ferrite prepared by calcining mesitine spar, or of the native mineral magnesioferrite, is added to a magnesite low in silica, iron, and lime, and the mixture is sintered. Advantageously, a little lime is also added. Specification 394,115 is referred to.
Patent GB-253555-A (GB)
Title: Improvements in or relating to brake equalizing mechanisms
IPC: B60T11/06
Filed: 1926-06-14
Abstract: 253,555. Barrett, P. D. June 14, 1926. Force - transmitting mechanism.-A fourwheel brake transmission system for vehicles includes a unitary compensating member adapted to equalize the pressure applied to one, pair of brakes and to apply the pressure as between the two pairs of brakes in a predetermined ratio. Means are also provided for varying this ratio during the application of the brakes, such means acting also to prevent failure of one pair of brakes from causing failure of the other pair, and it may be also to delay the application of one pair. As shown in Fig. 4, a three-armed compensating member 4 has ball-and-socket connection with a pull rod 3 connected to the pedal 1, a pull rod 6 connected to an equalizer 9 for the front wheel brakes and pull-rods 7, 8 connected to the rear wheel brakes by rock shafts 15 and pull-reds 17. The equalizer 9 is connected to the wheel brakes by rock shafts 11 and pull-rods 13. The equalizer 9 between the, front pair of brakes may be dispensed with, the link 6 being in this case connected to these brakes through a single rock shaft. As the arms b, c of the member 4 are equal the pressure applied to the rear wheel brakes thereby is equalized. The ratio of the pressure applied as between these, brakes and the front wheel brakes depends upon the ratio of the length of the arm a to that of the arms b, c. To vary this ratio during the application of the brakes an adjustable spring stop 22 mounted on a fixed member 19 may be provided for engagement with the arm a after it has moved a certain distance in applying the brakes. The reaction of the stop 22 thus acts to reduce the ratio of the pressures applied to the front and rear brakes respectively. In the event of failure of the linkage of either the front or rear brakes the arm a of the member 4 is assisted by the stop 22 or a stop 5 so as. to permit the application of the one pair of brakes. Variation of the ratio of the pressure applied to the two pairs of brakes may also be effected by a dash-pot device, the piston-rod 26, Fig. 6, of which is connected to the arm a of the member 4. The piston of the dash-pot has an aperture 27 provided with a non- return valve to permit free movement of the piston in one direction, and with an aperture 29 which is gradually restricted by a wedge 28 as the piston moves in the brake-applying direction. The dash-pot also acts to delay the application of the front brakes when the pedal 1 is suddenly operated, and the engagement of the piston with the one or the other end of the cylinder permits operation of the one pair of brakes in the event of failure of the other pair.
Patent GB-1386854-A (GB)
Title: System for controlling an electric output with reduced  recovery  time
IPC: G05F1/46
Filed: 1972-03-30
Abstract: 1386854 Automatic control of electric variables HITACHI LTD 30 March 1972 [31 March 1971] 15047/72 Heading G3R A control system for maintaining an electric output at a reference value is provided with a threshold element responsive to the error signal to increase the gain of the system when the error signal exceeds a predetermined value, whereby the output is rapidly restored to its reference value following large deviations therefrom. In the embodiment of Figure 1, a threshold element 4 is responsive to the output of an error detector 3 to increase the gain of control means 2 when a large variation of the output E 0  from controlled unit 1 causes the output of the detector 3 to exceed the predetermined value. Operation for steady state conditions with positive or negative error signals is discussed. The output of element 4 can control a further control means whose output is combined with that of control means 2, Figs.2 and 2a (not shown), the arrangement being such that the further control means may supplement or replace the control means 2 during large variations of output E 0 . The gain may be controlled in steps by providing more than two control means. Figure 3 shows the application of the invention to the control of an alternator 6, whose field winding 62 is energized through a rectifier bridge 101--104 having thyristors 101,102 controlled by a magnetic phase shifter 8 through pulse shapers 9. A transformer 7 supplies the output windings 83, a bias winding 82 and a control winding 81 of the phase shifter 8, the latter winding being fed from a rectifier 11 which also supplies a NOT circuit 22 and is supplied through a saturable reactor 21. The operating point of this reactor is chosen so that, for normal variations of the output voltage E 0 , the winding 81 is controlled to vary the firing points of the thyristors 101, 102 to maintain the voltage E 0  at a reference value E s  set by the reactor characteristic, Fig.4 (not shown). If E o  falls suddenly to cause the error signal to exceed the predetermined value, the NOT circuit 22 provides an output to turn the thyristors 101, 102 fully-on, to suddenly increase the voltage E o , thus causing the output of circuit 22 to disappear and subsequent control to revert to the phase shifter 8. The latter may be controlled by a further detecting means (not shown) responsive to a sudden rise of E o  to provide compensation opposite to that for the sudden fall. The embodiment of Figure 3 maintains a constant ratio between the output voltage E o  and the frequency of the alternator, since the reactor characteristic is shifted in proportion to the frequency to vary the reference voltage E s  correspondingly.
Patent GB-1098892-A (GB)
Title: Photosensitive materials prepared from homopolymers and copolymers of salts of n-vinylbenzyl-4-vinylpyridine
IPC: G03F7/038
Filed: 1966-04-05
Abstract: Homopolymers and copolymers are disclosed of salts of N-vinylbenzyl-4-vinylpyridine having an aromatic or heteroaromatic ring attached at the b -position of the 4-vinyl group.  The polymer may comprise units of the formula <FORM:1098892/C3/1> wherein R is an aromatic or heteroaromatic radical, e.g. phenyl, naphthyl, thienyl or furyl; A is an anion, e.g. Cl-, SO4=, tosylate, or alkyl-sulphonate; and n is 1-5. The salt may be copolymerized with other vinyl compounds. The compounds may be prepared by chloromethylation of polystyrene, quaternizing the polyvinyl benzyl chloride formed with picoline, followed by condensation with aromatic or heteroaromatic aldehydes.  Copolymers are prepared similarly from copolymers of vinylbenzyl chloride.
Patent GB-192980-A (GB)
Title: Improvements in resilient wheels
IPC: B60B9/26
Filed: 1922-05-29
Abstract: 192,980. Lieckfelt, E. F. May 29, 1922. Spring wheels.-In a wheel having L-shaped spring spokes 5, Fig. 2, which are rigidly attached to the hub, shoes 26 are mounted between the outer ends of adjacent spokes and are secured therewith by screws 25 to the felloe 17 so that one of the adjacent spokes can roll on the inner surface, and the other spoke on the outer surface 33 of the shoe. A rim 16, Fig. 5, and a notched felloe ring 22 are secured to the felloe by means of rim-wedges 20 and bolts 19. Pins 29, Fig. 2, on the shoes engage in holes in the spoke-ends and one end of each shoe is notched to accommodate the adjacent screw 25. Each shoe 26 is flanged on the side opposite to the felloe-ring 22 and holes in the flange 34 communicate with grooves in the shoe. Each spoke comprises a number of strips of spring steel, the elbow curvature of the strips increasing from the outside. The spokes may have longitudinal slits near their outer ends, and the inner ends of the strips carry tongues adapted to lie side by side on the hub 1. V-shaped springs 7, Fig. 10, are forced between adjacent spokes, at the hub by wedges 8. Eye-bolts 9 are mounted on bolts 4, which connect the hub-flange 2 and a hub-ring 3, Fig. 4, and nuts 12 on the bolts 9 act upon washers 10, which extend over the wedges 8. In another form, bars 43, Fig. 4. carrying studs 46 replace the bolts 4, two sets of wedge-members 49, 47 being used.
Patent GB-726658-A (GB)
Title: Improvements in or relating to lifting devices
IPC: B66F3/22
Filed: 1951-06-26
Abstract: 726,658. Load handling appliances. LUDOWICI, J. W. June 26, 1951, No. 15136/51. Class 78 (3). [Also in Group X] A lifting device comprises two or more lazy tongs structures, whereby the end of one link of each structure is pivotally secured to a fixed point on a frame member and the end of another Ink is pivotally and slidably guided in a slot in the frame member, the frame members being rigidly interconnected either in spaced relationship or at an angle to one another, whilst all links of each lazy tongs structure are similarly interconnected at the end joints or at an end joint. Fig. 2 shows two systems of pivoted links 1 the end of one link being pivoted at 4 to a frame member and another end being free to slide in a slot 10. The systems are interconnected by rods 12, and the links may be alternatively long and short to collapse one within the other. The systems may be combined at an angle or to form a T-shape, a triangle or a square in plan. In Fig. 9 are shown stiffening rods 16, 17 pivoted to the end joints of the crossed links 1 and which are extended with the framework and assist in supporting the structure. Detents with latches may be arranged at the joints 19 or torsion springs. The crossing points of the links may be off centre to describe an arc when extended. The links may be extended by a piston and cylinder or screw and nut or by a cable wound on a winch of conical shape or in layers on a ring winch. A platform may be supported at the top of the linkage at 20. As shown in Fig. 16 a platform 35 is supported by a lazy tong linkage and a hoisting rope 27 secured at one end to the platform passes round rollers 37 situated at the end points of the links round rollers 38, 39, 40, 42 to 45 and reversing rollers 40 to a conical winch drum 46. The reversing rollers 40 are mounted on extensions of the platform whereby when the winch is operated the hoisting is first assisted by the roller arrangement. Alternatively a roller may be attached to an end link and engaged in a bight of the hoisting rope, or the platform may be supported on pistons mounted on springs in cylinders. A collapsible stairway may be located along one link of the lazy tong or at one edge the interior of the system being used for a lift or the stairway may pass through the central pivots. The system may be used for a hoist fitted with two guides the system supporting rollers to engage the hoist which may be winch operated.
Patent GB-834782-A (GB)
Title: Improvements in or relating to cam cutting machines
IPC: B23Q35/18
Filed: 1955-05-25
Abstract: 834,782. Copy-milling. CRAMIG ENGINEERING CO. Ltd., and WILLSON, D. J. May 25, 1956 [May 25, 1955], No. 15141/55 Class 83 (3). A cam-cutting machine comprises two separate fluid pressure-operated devices 30, 37 controlled by a template 53 for imparting relative movement between a driven cam blank 12 and a tool 17. The cam 5, Fig. 1, to be cut, is designed to index a head 1 by engagement with rollers 3. Each roller is tapered and in one operation moves along an arc 10. The milling- cutter must, therefore, move parallel and transversely to the cam axis during cutting, as well as perpendicularly to the axis for controlling the depth of cut. In the cam-milling machine, the blank 12 is driven by gearing 15, and the tool 17 is shaped as a roller 3 and rotated by the main drive or a separate motor 19. The tool 17 is adjusted manually on compound slides 20, 23 on a slide 25 actuated by the hydraulic ram 30 controlled by a plunger 34. A second plunger 40 controls the ram 37 to move a slide 35 carrying the slide 25. A dollyroller 48, representing a roller 3, is mounted on an arm 45, which is adjustable on an arm 41 and swings freely on a pivot 44. The arms 41, 45 are adjusted with the aid of a setting-pin 54 so that the radius-of-swing (44-48) is equal to the distance R of a roller 3 from the centre 2 of the head 1. The dolly-roller 48 is moved, in a path equivalent to the path 10 of a roller 3, by the template 53, rotated by gearing 51 and having portions 55, 57 differing in radius by the chord distance 9, Fig. 1. The template 53 may have a recessed portion 61 to control a third hydraulic ram to advance and withdraw the cutter slide 20. The cutter is not withdrawn, however, if a cam is to be cut which causes reciprocation of a member. In a modification, the work, with its driving motor, is moved instead of the tool. The movements may be controlled through electric or hydraulic servomechanisms and electric or hydraulic motors rotating lead-screws.
Patent GB-479119-A (GB)
Title: Improvements relating to undergarments
IPC: A41B9/02
Filed: 1936-05-29
Abstract: 479,119. Undergarments. COOPER'S, Inc. May 29, 1936, No. 15225. Convention date, May 29, 1935. [Class 141] In an undergarment formed from front portions, a back portion and a crotch portion, all of knitted material resilient transversely but not .longitudinally, the crotch portion 18. Fig. 1, overlaps the front portion 19 and is secured so as to form a fly-closed opening. An inextensible strip 46, secured to the elastic waist band 17, serves to support the crotch piece. As shown in Fig. 8, the front is made in one piece 55 and two fly-closed openings are formed, the edges being bound by binding strips 70 and a supporting strip 71 being provided.
Patent GB-1176228-A (GB)
Title: Improvements in or relating to Gyrocompasses
IPC: G01C19/38
Filed: 1967-04-04
Abstract: 1,176,228. Gyroscopic apparatus. TOKYO KEIKI SIEZOSHO CO. Ltd. April 4, 1967 [April 4, 1966; April 11, 1966], No.15287/67. Heading G1C. The description is identical to that described in Specification 1,176,735 but the claims include the feature of the alarm which gives a signal if the power supply to the gyro compass fails.
Patent GB-856937-A (GB)
Title: Apparatus for sharpening the knife blades of lawn mowers
IPC: B24B3/42
Filed: 1957-05-15
Abstract: 856,937. Grinding lawn mower blades. DIXON, E. R. [Representative of ROBERTS, D.]. May 14, 1958 [May 15, 1957], No. 15363/57. Class 60. Apparatus for sharpening the knife blades of the cutting cylinder of a lawn mower comprises a grinding member carrier which is pivotally mounted at one end on a rigid standard and provided at its other free end with means adapted to bear on a fixed support, means for adjusting the height of the pivot position of the carrier, means for adjusting the distance of the said other end from the cutting cylinder of an inverted mower and thereby adjusting the relative position of the grinding member and the knife blades and means for supporting the mower in its inverted position. Bearers 15 adjustably secured to the base plate 2 by pins 20 have notches 16 to receive a tie-bar 17 connecting the side members 18 of the mower ; the latter is also supported by bearers 21 adjustably secured to the base plate 2 by pins 22. Columns 1 are adjustable on the base plate 2 by screws 7 and are secured in adjusted position by bolts 5 each passing through a column and through a slot 4 in an angle iron 3. Slides 11 are vertically adjustable in the columns 1 by screws 9 and support a bar 14. Pivotally mounted on the bar 14 are a pair of spaced arms 27 held together by a cross-member 28. A grinding stick 29 is mounted on the arms 27, e.g. by a box section guide fixed to the inner surface of one of the arms 27 ; alternatively, a grinding wheel may be provided. A pin 30 in screwthreaded engagement with the cross-member 28 has its end resting on the fixed blade 26 so as to locate the grinding tool in relation to the axis of the cutting cylinder 24. The arms 27 are moved manually along the bar 14 between stops 33 to bring the grinding tool into contact with the full length of the knife blades 25. The cutting cylinder is rotated by a handle inserted in a hole in one of the driving wheels 23 of the mower. Alternatively the driving wheel is replaced by a pulley belt driven from an electric or other motor.
Patent GB-706930-A (GB)
Title: Improvements in or relating to the preparation of 2-aminothiazole
IPC: C07D277/38
Filed: 1951-06-28
Abstract: 2-Aminothiazole is obtained by hydrolysing a 1 : 2 dihaloethyl acetate with water, cooling and mixing the solution with a solution containing thiourea, and heating.  The hydrolysate in the case of dichloroethyl acetate is believed to contain chloroacetaldehyde, hydrochloric acid and acetic acid.  The reaction mixture from the low temperature chlorination of vinyl acetate may be used for the 1 : 2 dichloroethyl acetate.  Examples are given of the conversion of vinyl acetate to chloro addition product, followed by hydrolysis, followed by treatment with solutions containing thiourea and urea, including one obtained from cyanamide with H2S and aqueous ammonia, without isolation of any intermediate products, to give 2-aminothiazole.
Patent GB-948098-A (GB)
Title: Method of manufacturing double-loop stitched slide fasteners
IPC: D05B3/18
Filed: 1961-04-28
Abstract: 948,098. Sliding clasp fasteners. T. YOSHIDA. April 28, 1961, No. 15484/61. Drawings to Specification. Heading E2S. [Also in Division D1] Sliding clasp fastener stringers are made, (see Division Dl), by attaching an interlocked element to a tape by double-loop stitching so as to form a raised braid which extends along the exposed side of the element and serves as a guide for the sliding clasp. The limbs of the element may be disposed in two parallel rows separated by a space, the latter being filled by a yarn which is covertenated by the stitching. Specification 881,289 is referred to.